X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=grading%2Fuserprog%2FMake.base;h=e0cad442f1f754fa4759f1343da3a0d06d84e9e1;hb=a9ca36e41805e259c2bfc238655a9586f7efb303;hp=365ef6c0f7ae35f0d202971168da82b82fca9af1;hpb=155701580fc575ce41ffe7fa027c45c86a4dbe4b;p=pintos-anon

diff --git a/grading/userprog/Make.base b/grading/userprog/Make.base
index 365ef6c..e0cad44 100644
--- a/grading/userprog/Make.base
+++ b/grading/userprog/Make.base
@@ -6,10 +6,15 @@ child_arg_SRC = child-arg.c
 child_bad_SRC = child-bad.c
 child_close_SRC = child-close.c
 
-DISKS = $(patsubst %,%.dsk,$(TESTS))
+DISKS = $(patsubst %,%.dsk,$(TESTS)) null.dsk
 
 disks: $(DISKS)
 
+null.o: null.S
+null: null.o
+	$(CC) $(LDFLAGS) $^ $(LDLIBS) -o $@
+null.dsk: null	
+
 exec-once.dsk exec-multiple.dsk join-simple.dsk join-twice.dsk: child-simple
 exec-arg.dsk: child-arg
 join-killed.dsk: child-bad
@@ -23,6 +28,8 @@ clean::
 
 include $(SRCDIR)/Makefile.userprog
 
+# Use -Werror because otherwise there's so much output spew
+# that it's very difficult to pick out warnings.
 CFLAGS += -Werror
 
 Makefile: Make.base Make.tests mkmf